| Countries With No Rivers | 0 | - | 4.96 | 76,068 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,404 |
| Countries with Fjords | 0 | - | 4.93 | 100,255 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,101 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,765 |
| North Sea Countries | 0 | - | 4.92 | 86,648 |
| Black Sea Countries | 0 | - | 4.87 | 60,357 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,043 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,140 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,972 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,357 |
| Megadiverse Countries | 0 | - | 4.97 | 133,955 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,797 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,276 |
| African Great Lakes | 0 | - | 4.82 | 65,271 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,656 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,344 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.88 | 86,452 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,969,663 |
| Capitals by River | 0 | - | 4.55 | 48,243 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,346 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,465 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,482 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,836 |
| Landlocked Countries | 0 | - | 4.99 | 414,238 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,721,919 |
| Countries that Start with A | 0 | - | 4.97 | 2,148,288 |
| Countries that Start with B | 0 | - | 4.95 | 2,281,110 |
| Countries that Start with C | 0 | - | 4.96 | 1,811,339 |
| Countries that Start with D | 0 | - | 4.96 | 702,259 |
| Countries that Start with E | 0 | - | 4.95 | 1,368,336 |
| Countries that Start with G | 0 | - | 4.97 | 1,493,709 |
| Countries that Start with H | 0 | - | 4.96 | 598,534 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,971 |
| Countries that Start with J | 0 | - | 4.98 | 596,590 |
| Countries that Start with K | 0 | - | 4.97 | 809,923 |
| Countries that Start with L | 0 | - | 4.98 | 1,083,527 |
| Countries that Start with N | 0 | - | 4.93 | 1,110,430 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,190 |
| Countries that Start with S | 0 | - | 4.98 | 1,745,467 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,701 |
| Countries that Start with U | 0 | - | 4.97 | 900,314 |
| Countries that Start with V | 0 | - | 4.98 | 605,476 |
| Countries that Start with F | 0 | - | 4.83 | 612,674 |
| Countries that Start with M | 0 | - | 4.97 | 1,374,086 |
| Rivers of the United States | 0 | - | 4.93 | 65,590 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,319 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,788 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,686 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,539 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,985 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,088 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,768 |
| Biggest City by River | 0 | - | 4.41 | 52,707 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,354 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,167 |
| Island Countries | 0 | - | 4.99 | 707,851 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,837 |
| Himalayan Countries | 0 | - | 4.95 | 135,565 |
| Andean Countries | 0 | - | 4.94 | 82,944 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,309 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,350 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,012 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,679 |
| Danube Countries | 0 | - | 4.97 | 71,131 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,841 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,602 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,610 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,524 |
| European Landlocked Countries | 0 | - | 4.99 | 145,831 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,299 |
| Countries with the Most Species | 0 | - | 4.99 | 95,280 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,440 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,220 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,389 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,989 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,624 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,001 |
| Countries in the Alps | 0 | - | 4.86 | 116,922 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,637 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,372 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,062 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,475 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,247 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,058 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,662 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,813 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,517 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,115 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,215 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,077 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,496 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,803 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,794 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,195 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,706 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,289 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,859 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,610 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,871 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,637 |
| Largest Countries By Category | 0 | - | 4.97 | 156,864 |
| Countries by Countries | 0 | - | 4.96 | 62,322 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,056 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,828 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,304 |
| Northernmost Countries | 0 | - | 4.99 | 358,046 |
| Landforms by Country | 0 | - | 4.52 | 51,920 |
| Countries of South America | 0 | - | 5.00 | 915,868 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,900 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,499 |
| "Land" Countries | 0 | - | 4.98 | 333,810 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,005 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,127 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,905 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,581 |
| Countries with Megacities | 0 | - | 4.99 | 247,484 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,428 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,176 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,838 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,099 |
| Countries by Official Language | 0 | - | 4.95 | 192,906 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,318 |
| Countries in their Native Language | 0 | - | 4.99 | 196,759 |
| Independence from Whom | 0 | - | 4.99 | 209,854 |
| Subdivisions by Country | 0 | - | 4.86 | 50,097 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,876 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,934 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,949 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,459 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,873 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,821 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,740 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,042 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,160 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,208 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,244 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,758 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,717 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,451 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,538 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,532 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,900 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,183 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,400 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,483 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,261 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,016 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,940 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,927 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,119 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,337 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,981 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,384 |
| Widest Countries East to West | 0 | - | 4.92 | 128,673 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,227 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,304 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,595 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,732 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,687 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,113 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,268 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,600 |
| Countries with Double Letters | 0 | - | 4.96 | 93,497 |
| Countries that End in N | 0 | - | 4.94 | 156,984 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,800 |
| Countries with Six Letters | 0 | - | 4.93 | 210,480 |
| Countries with W | 0 | - | 4.97 | 158,300 |
| Countries with Z | 0 | - | 4.98 | 288,010 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,624 |
| Countries That End in U | 0 | - | 4.95 | 119,551 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,692 |
| Countries that End in O | 0 | - | 4.92 | 158,591 |
| Countries that End in R | 0 | - | 4.87 | 118,307 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,880 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,211 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,416 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,552 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,095 |
| Countries That End in Y | 0 | - | 4.90 | 185,235 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,477 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,771 |
| Countries that End in I | 0 | - | 4.94 | 134,470 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,298 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,237 |
| Countries That End in NIA | 0 | - | 4.92 | 109,054 |
| Countries That End in BIA | 0 | - | 4.92 | 147,766 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,140 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,546 |
| Countries That End in RIA | 0 | - | 4.93 | 126,127 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,073 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,311 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,562 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,940 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,435 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,961 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,182 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,708 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,842 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,880 |
